[xen master] x86: add asmlinkage macro to variables only used in asm code

[patchbot@xxxxxxx]

commit 5c72b54b65071ca34a45f157a0db96dcfa250e0f
Author:     Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
AuthorDate: Thu Nov 23 10:06:17 2023 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Nov 23 10:06:17 2023 +0100

    x86: add asmlinkage macro to variables only used in asm code
    
    To avoid a violation of MISRA C:2012 Rule 8.4, as permitted
    by docs/misra/rules.rst.
    
    The current_stack_pointer is a declaration: mark it as such
    for ECLAIR.
    
    Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/setup.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index c41dfdb2bd..c8947d3f96 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -75,7 +75,8 @@ static bool __initdata opt_invpcid = true;
 boolean_param("invpcid", opt_invpcid);
 bool __read_mostly use_invpcid;
 
-unsigned long __read_mostly cr4_pv32_mask;
+/* Only used in asm code and within this source file */
+unsigned long asmlinkage __read_mostly cr4_pv32_mask;
 
 /* **** Linux config option: propagated to domain0. */
 /* "acpi=off":    Sisables both ACPI table parsing and interpreter. */
@@ -146,14 +147,15 @@ cpumask_t __read_mostly cpu_present_map;
 
 unsigned long __read_mostly xen_phys_start;
 
-char __section(".init.bss.stack_aligned") __aligned(STACK_SIZE)
+/* Only used in asm code and within this source file */
+char asmlinkage __section(".init.bss.stack_aligned") __aligned(STACK_SIZE)
     cpu0_stack[STACK_SIZE];
 
 /* Used by the BSP/AP paths to find the higher half stack mapping to use. */
 void *stack_start = cpu0_stack + STACK_SIZE - sizeof(struct cpu_info);
 
 /* Used by the boot asm to stash the relocated multiboot info pointer. */
-unsigned int __initdata multiboot_ptr;
+unsigned int asmlinkage __initdata multiboot_ptr;
 
 struct cpuinfo_x86 __read_mostly boot_cpu_data = { 0, 0, 0, 0, -1 };
 
--
generated by git-patchbot for /home/xen/git/xen.git#master